Diaper



y 9, 0 H. T. s. c. DE MATZDORF 7,

DIAPER Filed July 7, 1948 :LLEmE- INVENTOR. M200 75C 0: M2200;

RTTUIP/VE/S Patented May 9, 1950 UNITED 2,507,197 DiAPER Hilda Tischler Santa Cru de-Matzdo'rf, Guatemala, Guatemala Application July '1', 1948, Serial mam 3 Claims; 1

This invention relates to diapers and has more particular reference to disposable diapers of the type designed to be discarded after being used once.

One object of the invention is toprovide a disposable diaper comprising a bottom layer of Water-prooied material and one or more coextensive layers of absorbent material secured to the water-proof layer and having a waterproo'fed beading formed around the peripheral edges of the diaper.

Another object of the invention is to provide a disposable diaper, as above characterized, where in the area of the diaper bounded by the Waterproofed beading is confined to substantially the central portion of the diaper.

of Fig. 1;

Fig. 3 is a plan view of a modified form of diaper;

Fig. 4 is a sectional view taken on line 4-'-' 4of Fig. 3;

Fig. 5 is a plan view of a second modified form of diaper; and

Fig. 6 is a sectional view taken on the line 65 of Fig. 5.

Referring now to the drawing, there is shown, in Figs. 1 and 2, one form of a diaper constructed in accordance with the present invention. As there shown, the diaper comprises a triangular shaped layer of flexible water-proofed material I0, which forms the outer layer of the diaper; two triangular shaped inner layer of soft flexible absorbent material ll, I2, coextensive in area with the outer layer of water-proofed material; and a peripheral water-proofed beading i3.

The outer layer of material it! may be made of any suitable soft, flexible material, preferably a cellulose material such as paper or paper cotton. This layer is water-proofed by being coated, on one or both sides, with any suitable water-proofing material, such as liquid paraffin or the like, which, in addition to its water-proofing qualities, acts as an adhesive to secure to itself the superimposed layer l2 of absorbent material'. The layers of absorbent material H, I2 arernade of any suitable soft, absorbent bibulous' material such as cotton batting or the like. While two such layers of absorbent material are shown, obviously, any number of such layers may be employed. However, I have found that a diaper having an overall thickness of A centimeter is completely satisfactory and avoids bulkiness.

The layer of absorbentmaterial I2 which is superimposed on the water-proofed layer H3, is secured thereto by the water-proofing material and any additional layers of absorbentmaterial are sufiiciently secured to each other by the interlocking of the fibers of the material of the layers. I

1 In order to prevent the escape of any moisture or excreta from around the edges of the diaper, a water-proofed be'ading is formed around the edges of the diaper; In the particular embodi ment sho'wnthe peripheral edges of the superimposedlayers It, and i2 areturned inwardly and secured, as by pressing with a not iron, or, as shown, by crimping. "This-produces a beading {3, which is water-proo fed, due tditsmuterm layer being formed by the water proofed layer l0 (See Fig. 2,) In additionto preventing the escape of moisture and excreta from the edges of the'diaper, the beading it helps maintain the layers in; H and i2 in their secured together position and add strength to the diaper structure.

A diaper constructed-as above described provides an inner surface of soft absorbent material for contacting the babys skin and absorbing moisture; an outer water-proofed covering which prevents the moisture from leaking through the diaper; and a water-proofed beading which engages the babys skin and prevents any moisture or excreta from escaping around the edges of the diaper.

As aforesaid, the diaper of the invention is designed to be disposed of after one use and, preferably, is designed as an adjunct to be used with the conventional cloth diaper, which holds it in place. Obviously, it can be secured on the body of the infant in the same manner as the conventional cloth diaper, as by the use of safety pins or the like, if desired. The water-proofed material and the layers of absorbent material, with the peripheral beading, have sufficient strength for this purpose.

In Figs. 3 and 4, there is shown a modified form of diaper. This diaper is identical in construction to the diaper shown in Figs. 1 and 2, except in outline. As shown, the diaper com- 3 prises an outer layer of water-proofed material l; two superimposed layers of absorbent material l I, I2, and a peripheral water-proofed beading I3. All of the layers are coextensive in size and shape, and, as shown, are substantially rectangular in outline and are provided with semicircular opposing cut outs I4, 15, on opposite sides of the diaper, adapted to fit the legs of the baby. The various layers of material in this modification are preferably made of the same material as the corresponding layers of the modification shown in Figs. 1 and 2, and, preferably, the beading I3 is made in a manner similar to that in which the beading I3 is made.

In Figs. 5 and 6, there is shown a second modified form of a diaper constructed in accordance with the present invention. As there shown, the diaper comprises an outer triangular shaped layer of flexible water-proofed material l6 having a peripheral beading H; a small triangular shaped inner layer of flexible, water-proofed material l8 superimposed on the layer l6; and two layers of absorbent material I9, 20 coextensive in size and shape with and superimposed upon the waterproofed layer l8; and a water-proofed beading 2| formed by inturning the peripheral edges of the superimposed layers l8, l9 and 20, and securing them in their infolded position, preferably by crimping. The superimposed water-proofed layers l6, l8 are held together by the water-proofing material. The absorbent layer [9 is secured to the inner water-proofed layer [8 by the waterproofing material, and the absorbent layer 20 is secured to the absorbent layer [9 by interlocking of the fibers of the material of which the layers are made, and the assembled layers held together by the beading 2|. The various layers of material in this modification are preferably made of the same material as the corresponding layers of the modification shown in Figs. 1 and 2.

From the foregoing, it readily will be seen that there has been provided a disposable diaper which is simple and economical in construction and one which is extremely eificient in use. The waterproofed beading aroundthe peripheral edges of the diaper will completely prevent any moisture or excreta from escaping around the edges of the diaper. The absorbent layers will absorb any moisture; and the outer water-proofed layer will prevent the leakage of any moisture through the diaper.

Obviously, the outer water-proofed layer may be made of any suitable flexible, water-proofed material, including cellophane or other flexible plastic materials, or, if desired, the outer surface of the bottom layer of absorbent material may be coated with water-proofing material such as liquid paraflin to form the water-proofed outer layer.

Having thus described the invention, what is claimed is:

1. A new article of manufacture, comprising a disposable diaper composed of an outer layer of water-proofed material, at least one inner layer of soft absorbent material coextensive with said outer layer, said layer having their marginal edges inturned and secured to the body of the diaper to form a reinforcing bead which holds the two layers together, prevents the escape of moisture and excreta, and prevents tearing of the diaper.

2. A disposable diaper comprising an outer flexible layer of thin paper coated with waterproofing material; an inner coextensive layer of soft absorbent material superposed on said outer layer and secured thereto by said water-proofing material; said layers having their marginal edges inturned and secured to the body of the diaper to provide a reinforcing water-proof bead to prevent the escape of moisture and excreta and to prevent tearing.

3. A disposable diaper, as set forth in claim 1, wherein said inner layer is composed of at least two sheets of soft cotton batting secured together by interlocking fibers,

HILDA TISCHLER SANTA CRUZ or:

MATZDORF.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Re. 18,468 Schwartz May 17, 1932 318,141 Samuel May 19, 1885 342,043 Samuel May 18, 1886 2,009,310 Dendofi July 23, 1935 2,122,417 Fridolph July 5, 1938 FOREIGN PATENTS Number Country Date 216,275 Great Britain May 29, 1924 

